Easy SPARQL server with express.js.
npm install express-sparql
import * as express from 'express'; import * as bodyParser from 'body-parser'; import handleSPARQL from 'express-sparql'; const PORT = '3000'; const server = express(); server.all('/sparql', bodyParser.urlencoded(), bodyParser.text({ type: [ 'application/sparql-query', 'application/sparql-update' ]}), handleSPARQL({ queryFn: async (query) => { const json = await DB.query(query); return json; }, updateFn: async (update) => { const json = await DB.update(update); return json; }, encodeFn: async (result, encoding) => JSON.stringify(result), }) ); server.listen(PORT);
See also: https://github.com/knowledge-express/poseidon.
- Encoding logic (i.e. content-negotiation)
- Better error handling